1 /*

     2 * Copyright (c) 2005 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: CLF Operation Observer.

    15 *

    16 */

    17 

    18 

    19 

    20 #ifndef __CFLDOPERATIONOBSERVER_H__

    21 #define __CFLDOPERATIONOBSERVER_H__

    22 

    23 // INTERNAL INCLUDES

    24 

    25 // EXTERNAL INCLUDES

    26 #include <e32base.h>

    27 #include <MCLFOperationObserver.h>

    28 

    29 // CLASS DECLARATION

    30 

    31 /**

    32 *  CLF Operation Observer.

    33 *  CFLDOperationObserver receives operation events of Content 

    34 *  Listing Framework. Operation event is generated when asynchronous refresh

    35 *  operation of List Model is finished.

    36 */

    37 NONSHARABLE_CLASS( CFLDOperationObserver )

    38     : public CBase,

    39       public MCLFOperationObserver

    40     {

    41     public:  // Constructors and destructor

    42 

    43 		/**

    44 		 * Creates and returns a new instance of this class.

    45 		 * @return Pointer to the CFLDOperationObserver object

    46 		 */

    47 	    static CFLDOperationObserver* NewL();

    48 

    49         /**

    50         * Destructor.

    51         */

    52         virtual ~CFLDOperationObserver();

    53 

    54     private:    // Constructors

    55         /**

    56         * C++ default constructor.

    57         */

    58         CFLDOperationObserver();

    59 

    60     protected:  // Methods derived from MCLFOperationObserver

    61 

    62         void HandleOperationEventL( TCLFOperationEvent aOperationEvent,

    63                                     TInt aError );

    64 

    65 	public:     // New functions

    66                                     

    67   		/**

    68         * Check if there is a refresh operation is ongoing.

    69         * @return ETrue if refresh is not finished,

    70         *         EFalse if refresh is finished

    71         */

    72         TBool IsRefreshOngoing();

    73 

    74         /**

    75         * Prepare for a refresh operation to start.

    76         * @param aWait The wait instance to stop when refreshing is completed

    77         */

    78         void PrepareForRefresh( CActiveSchedulerWait& aWait );

    79 

    80     private:    // Data

    81 

    82         /// Own: For waiting the refresh operation to complete

    83         CActiveSchedulerWait* iWait;

    84     

    85         // For indicating that refresh operation is started but not finished

    86         TBool iRefreshOngoing;                                    

    87 

    88     };

    89 

    90 #endif // __CFLDOperationObserver_H__

    91 

    92 // End of File